The Case of D.B. Cooper's Parachute (Unabridged‪)‬

Portland police detective Neil Ferguson uncovers a series of puzzling and threatening clues that lead to the identity of D.B. Cooper, the mysterious man who hijacked a plane and parachuted off with $200,000 in 1971. But when Ferguson delves deeper into a web of blackmail and murder, he realizes there may in fact be two D.B. Coopers.